Mailbox with cartoon holding stop sign



FIG. 1 is a front view of a mailbox with cartoon holding stop sign showing my new design;

FIG. 2 is a rear view thereof;

FIG. 3 is a right side view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a top view thereof;

FIG. 6 is a bottom view thereof; and,

FIG. 7 is a perspective view thereof, shown in an open condition.

The environmental elements of the disclosure shown in broken lines form no part of the claimed design. 

The ornamental design for a mailbox with cartoon holding stop sign, as shown and described. 